diff options
| author | Jaroslav Hensl <jara@hensl.cz> | 2024-08-18 16:51:58 +0200 |
|---|---|---|
| committer | Jaroslav Hensl <jara@hensl.cz> | 2024-08-18 16:51:58 +0200 |
| commit | 6e547655ca3c97f57c876d349b92ee1b9b6daa5b (patch) | |
| tree | 64429d0ec48f1ff11fbb4485de9d66bf4abcd75f /vxd_color.h | |
| parent | a1812e7538bd018ffbabb6573dee9e7345c6d57a (diff) | |
| download | vmdisp9x-6e547655ca3c97f57c876d349b92ee1b9b6daa5b.tar.gz | |
SVGA: double buffering
Diffstat (limited to 'vxd_color.h')
| -rw-r--r-- | vxd_color.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/vxd_color.h b/vxd_color.h new file mode 100644 index 0000000..7b9ecf0 --- /dev/null +++ b/vxd_color.h @@ -0,0 +1,71 @@ +#ifndef __VXD_COLOR_H__INCLUDED__
+#define __VXD_COLOR_H__INCLUDED__
+
+DWORD palette_emulation[256] = {0};
+
+static inline void blit16(
+ void *src, DWORD src_pitch,
+ void *dst, DWORD dst_pitch,
+ DWORD blit_x, DWORD blit_y, DWORD blit_w, DWORD blit_h)
+{
+ const DWORD bottom = blit_y+blit_h;
+ DWORD x, y;
+ for(y = blit_y; y < bottom; y++)
+ {
+ WORD *src_ptr = ((WORD*)(((BYTE*)src) + src_pitch*y))+blit_x;
+ DWORD *dst_ptr = ((DWORD*)(((BYTE*)dst) + dst_pitch*y))+blit_x;
+
+ for(x = 0; x < blit_w; x++)
+ {
+ DWORD px = *src_ptr;
+ *dst_ptr = ((px & 0xF800) << 8) | ((px & 0x07E0) << 5) | ((px & 0x001F) << 3);
+ src_ptr++;
+ dst_ptr++;
+ }
+ }
+}
+
+static inline void blit8(
+ void *src, DWORD src_pitch,
+ void *dst, DWORD dst_pitch,
+ DWORD blit_x, DWORD blit_y, DWORD blit_w, DWORD blit_h)
+{
+ const DWORD bottom = blit_y+blit_h;
+ DWORD x, y;
+ for(y = blit_y; y < bottom; y++)
+ {
+ BYTE *src_ptr = (((BYTE*)src) + src_pitch*y)+blit_x;
+ DWORD *dst_ptr = ((DWORD*)(((BYTE*)dst) + dst_pitch*y))+blit_x;
+
+ for(x = 0; x < blit_w; x++)
+ {
+ *dst_ptr = palette_emulation[*src_ptr];
+ src_ptr++;
+ dst_ptr++;
+ }
+ }
+}
+
+static inline void readback16(
+ void *src, DWORD src_pitch,
+ void *dst, DWORD dst_pitch,
+ DWORD blit_x, DWORD blit_y, DWORD blit_w, DWORD blit_h)
+{
+ const DWORD bottom = blit_y+blit_h;
+ DWORD x, y;
+ for(y = blit_y; y < bottom; y++)
+ {
+ DWORD *src_ptr = ((DWORD*)(((BYTE*)src) + src_pitch*y))+blit_x;
+ WORD *dst_ptr = ((WORD*)(((BYTE*)dst) + dst_pitch*y))+blit_x;
+
+ for(x = 0; x < blit_w; x++)
+ {
+ DWORD px = *src_ptr;
+ *dst_ptr = ((px & 0xF80000) >> 8) | ((px & 0xFC00) >> 5) | ((px & 0x00F8) >> 3);
+ src_ptr++;
+ dst_ptr++;
+ }
+ }
+}
+
+#endif /* __VXD_COLOR_H__INCLUDED__ */
|